Cap-protector for blasting-cartridges



(No Model.)

T. DE GOAR 82; W. KEAST.

GAP PROTECTOR FOR BLASTING CARTRIDGES.

I No. 380,477.

Fir:

WITNESSES Patented Apr. 3, 1888.

l J Hit; t l- INVBNTOR:

UNITED STATES.

PATENT OFFI E.

THOMAS DE COAR AND WILLIAM KE'AST, OF RUSSELL GULCH, COLORADO.

CAP-PROTECTOR FOR BLASTlNG-CARTRIDGES.

SPECIFICATION forming'part of Letters Patent No. 380.477, dated April 3, 1885. v Application filed December 15, 1887. Serial No. 257,949. (No model.)

To all whom it may concern:

Be it known that we, (PHoMAs DE Conn and WILLIAM KEAST, both of Russell Gulch, in the county of Gilpin and State of Colorado, have invented a new and Improved Cap-Protector for Dynamite Cartridges, of which the following is a specification, reference being bad to the annexed drawings, forming a part thereof, in which- Figure 1 is a perspective view, partly in section, showing the application of our improvement to a percussion-fuse; and Fig. 2 is a longitudinal section of a dynamite cart1'idge,showing our improved cap-protector in the position of use.

Similar letters of reference indicate corresponding parts in both views.

The object of our invention is to provide a protector and shield for the percussionfuses of dynamite cartridges, which will prevent aceident in case the fuse fails to explode and it becomes necessary to remove the cartridge.

gether with the inclosed cap, without danger Our invention consists in a metallic shield loosely fitting the percussion-cap, attached to the end of the fuse, and provided with a head by which the protector may be withdrawn, to-

of exploding the cap.

To the end of the fuse A is attached a fulminate cap, B, in the usual way. Ordinarily the caps B are embedded in the dynamite cartridges 0 without any covering or protection, and in case the fuse misses fire and it becomes necessary to remove and replace it with another a sharp instrument is used for withdrawing the cap from the cartridge, and frequently the cap is exploded by the action of the sharp instrument, thereby causing the explosion of the dynamite cartridge and injuring or killing the operator. To avoid this danger we provide a metallic shield, D, having at one end a point, a, and,at the opposite end ahead, b, which is slit at two points, forming an opening, 0, through which the cap B is introduced, the metal cut from the main body of the head b by slitting forming a lid, (1, which may be bent down, so as to partly close the opening after theintroduction of the cap.

By the employment of the shield D the cap B is prevented from injury by tamping, while its efficiency in exploding the cartridge 0 is not diminished, and in case of the failure of the cap to explode it may be safely withdrawn from the dynamite cartridge 0 by pulling out the shield D, the head b aifordingjfacilities for grappling the shield.

It is obvious that our improvement can be used with equal advantage with battery-caps and electric discharging apparatus.

Having thus described our invention, we claim as new and desire to secure by Letters Patent p 1. A shield for fulminate caps, formed of a tube having an opening at one end for the insertion of the cap, and provided with a lid to partly close the opening after the introduction of the cap, substantially as described.

2. The shield D, formed of a closed tube pointed at one end and provided with ahead, 11, at the opposite end, said head having an 70 opening, 0, and a lid, d, substantially as de scribed.

THOMAS DE COAR. WILLIAM KEAST. 

